<div class="box">
    <ng-content select="[app-title]"></ng-content>
    <ng-content select="[app-container]"></ng-content>
    <ng-content select="[app-container]"></ng-content>
    <ng-content select="[app-container]"></ng-content>
    <ng-content select="[app-container]"></ng-content>
</div>

